<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>

        <a href="localhost:9002/api/idc/device/download?filepath=static/2023-04-24/0b9bc4c466d84c53a76dcc8ae9a431f9.jpg">99999</a>
        websocket Demo---- user000 <br />
        <input id="text" type="text" /> 
        <button onclick="send()"> Send </button>   
        <button   onclick="closeWebSocket()"> Close </button>
        <div id="message">   </div>
        
    <script type="text/javascript">
     //判断当前浏览器是否支持WebSocket
      if('WebSocket' in window){
        //   websocket = new WebSocket("wss://idctest.ibs-bj.com/ws/panel/COQ-00-000000-0000000000");
        //    websocket = new WebSocket("ws://localhost:9004/ws/panel/COQ-00-011212-JSGV444UCL");
        websocket = new WebSocket("ws://localhost:9004/ws/panel/1");
        //   var websocket = new WebSocket("wss://opentest.ibs-bj.com/ws/panel/1");
          console.log("link success")
      }else{
          alert('Not support websocket')
      }
      
      //连接发生错误的回调方法
      websocket.onerror = function(){
          setMessageInnerHTML("error");
      };
       
      //连接成功建立的回调方法
      websocket.onopen = function(event){
          setMessageInnerHTML("open");
      }
       console.log("-----")
      //接收到消息的回调方法
      websocket.onmessage = function(event){
            setMessageInnerHTML(event.data);
      }
       
      //连接关闭的回调方法
      websocket.onclose = function(){
          setMessageInnerHTML("close");
      }
       
      //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
      window.onbeforeunload = function(){
          websocket.close();
      }
       
      //将消息显示在网页上
      function setMessageInnerHTML(innerHTML){
          document.getElementById('message').innerHTML += innerHTML + '<br/>';
      }
       
      //关闭连接
      function closeWebSocket(){
          websocket.close();
      }
       
      //发送消息
      function send(){
          var message = document.getElementById('text').value;
          let a= {
              "type": "sub",
              "topic": "/device/P1000Q/COQ-00-1AD212-R60CSFGN5S/message/event/P1000QDATA",
              "parameter": {

              },
              "id": 1646016762320
          };
          websocket.send(a);
      }
    </script>
        
    </body>
</html>